What it does for your water
The Diamond Crystal Iron Fighter 40 lb Rust-Defense Softener Salt is softener salt in rust-defense pellets form, 40 lb per bag, 99.6% pure.
Rust-defense salt carries an additive that helps keep iron from building up on the resin.
Keep the salt level above the water in the brine tank, and break up any crust (bridging) if the level stops dropping.
From the listing: model Iron; purity 99.6%; bag 40 lb.
Is it the right unit for your house?
Choose it when
- Topping up a salt-based softener
Pass on it when
- Salt-free conditioners
Where it wins and where it loses
Wins
- Rust-defense pellets
- 40 lb
- 99.6% purity
Loses
- Heavy bags to carry
Limits to know about
- Figures are the maker's or seller's own; check fit and capacity against your water test and your equipment's manual.
Maker's figures
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | Iron | Retailer |
|---|---|---|
| Purity (maker) | 99.6% | Retailer |
| Bag size | 40 lb | Retailer |
Units to weigh against it
Other softener salt in the catalog
- Morton Pure & Natural Solar Salt Crystals
- Morton Pure & Natural 18.14 kg Solar Salt Crystals
- Diamond Crystal Sun Gems 804275 40 lb Solar Salt Crystals
- Diamond Crystal Solar Naturals 50 lb Solar Salt Crystals
Every softener salt on one grid · All Diamond Crystal units we cover
Final verdict
A sound rust-remover salt for topping up a salt-based softener.
Where to buy
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